How is it determined the highest energy level an atom has A. By the group number
B. By the period number
C. By the atomic number
D. By the mass number

C. Atomic mass

Explanation:

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i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.

all eukaryotic cell have mitochondria : )